参考：https://blog.csdn.net/qq_2418...1.变换原点transform-origin(X,Y)变换原点，默认值为中心位置(-webkit-,-moz-,-o-)x和y的值可以是百分比值，em,pxx→left,center,righty→top,center,bottomtopleft|lefttop==>00top|topcenter|中上==>50%0left|leftcenter|centerleft==>050%center|centercenter==>50%50%(默认)right|rightcenter|centerright==>100%50%bottom|bottomcenter|centerbottom==>50%100%bottomleft|leftbottom==>0100%bottomright|rightbottom==>100%100%transform-origin(25%,75%)2.旋转rotatetransform:rotate(30deg)3.移动translatetransform:translate(100px20px)4.缩放scaletransform:scale(2,1.5)5.扭曲skewtransform:skew(30deg,10deg)basepoint:transform-origin(50%,50%)默认值
